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Published on: March 2, 2020
Sacroiliac joint bridging: demographical and anatomical aspects
Gali Dar1, Smadar Peleg, Youssef Masharawi
1Department of Anatomy and Anthropology, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel. galidar@yahoo.com
Spine
|August 12, 2005
Summary
Sacroiliac joint bridging (SIB) is a common phenomenon, predominantly observed in males and increasing with age. Radiographs are unreliable for diagnosing SIB, which is distinct from osteoarthritis.
Area of Science:
- Osteology and anatomical variations.
- Demographic and anatomical characterization of skeletal features.
Background:
- Sacroiliac joint bridging (SIB) is a significant diagnostic parameter in spinal diseases, yet its demographic associations remain unestablished.
- Previous radiograph studies have limitations in assessing SIB extent and its relationship to demographic factors.
Purpose of the Study:
- To define the demographic and anatomical characteristics of SIB in a normal skeletal population.
- To assess the diagnostic accuracy of radiographs for identifying SIB.
Main Methods:
- Examination of 2,845 skeleton pelves to record SIB extent and laterality.
- Radiographic evaluation of ten pelves (5 with SIB, 5 without) by radiologists.
Main Results:
- SIB prevalence was 12.27% in males versus 1.83% in females (P < 0.001).
- SIB was age-dependent (r = 0.985; P = 0.0001) and independent of ethnic origin (P = 0.0535).
- Radiographic examination demonstrated low sensitivity for SIB diagnosis.
Conclusions:
- SIB is a common, age-dependent, male-predominant phenomenon, unrelated to ethnicity.
- SIB primarily affects the superior aspect of the sacroiliac joint.
- Radiographs are insufficient for distinguishing normal from bridged sacroiliac joints; SIB should be recorded separately from osteoarthritis.
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